S62.163K Displaced fracture of pisiform, unspecified wrist, subsequent encounter for fracture with nonunion

Name of the Condition

• Displaced fracture of pisiform, unspecified wrist, subsequent encounter for fracture with nonunion

Summary

This condition involves a displaced fracture of the pisiform bone in the wrist that has not healed properly, resulting in nonunion. The pisiform is a small, pea-shaped carpal bone on the palmar (palm) side of the wrist, near the base of the pinky finger. Displacement means the bone fragments are shifted from their normal position, and nonunion indicates the fracture has failed to fuse after an expected healing period. This is a subsequent encounter, meaning the patient is receiving ongoing care for the established nonunion.

Causes

Typically caused by direct trauma to the wrist, such as a fall onto an outstretched hand, a blow to the palmar side of the wrist, or a crushing injury. High-impact activities or accidents may also lead to fractures in this specific bone. Nonunion can result from inadequate immobilization, poor blood supply to the bone, infection, or severe initial displacement.

Risk Factors

• Participation in contact sports or activities with a high risk of falls.
• Osteoporosis or weakened bone structure, especially in older adults.
• Previous wrist injuries or fractures.
• Smoking, which impairs bone healing.
• Conditions affecting blood flow to the wrist.

Symptoms

• Persistent pain, swelling, and tenderness in the palmar side of the wrist.
• Bruising or discoloration around the injury site.
• Limited range of motion or difficulty moving the hand or fingers.
• Visible deformity in severe cases.
• Clicking or grinding sensations during wrist movement.

Diagnosis

Physical examination to assess pain, swelling, and wrist mobility. Imaging tests, such as X-rays or CT scans, to confirm nonunion and evaluate bone alignment. Additional tests may be ordered to rule out infection or assess blood flow.

Treatment Options

• Immobilization with a cast or splint to stabilize the wrist.
• Surgical intervention, such as bone grafting or internal fixation, to promote healing.
• Physical therapy to restore strength and range of motion.
• Pain management with medications or other therapies.
• Monitoring for complications like infection or further displacement.

Prognosis and Follow-Up

Prognosis depends on the severity of the nonunion and the effectiveness of treatment. Some fractures may heal with conservative care, while others require surgery. Regular follow-up appointments and imaging are necessary to assess healing progress. Long-term outcomes may include persistent pain or reduced wrist function if the nonunion is not resolved.

Complications

• Chronic pain or instability in the wrist.
• Arthritis or joint damage due to improper healing.
• Nerve or tendon damage from the fracture or surgery.
• Infection, particularly if surgical intervention is required.
• Reduced grip strength or functional limitations.

Lifestyle & Prevention

• Avoid high-impact activities that risk wrist injury.
• Use protective gear during sports or work.
• Maintain bone health through a balanced diet and exercise.
• Quit smoking to improve bone healing.
• Follow post-injury care instructions to reduce nonunion risk.

When to Seek Professional Help

Seek immediate medical attention if you experience severe pain, swelling, or deformity after a wrist injury. Contact a healthcare provider if symptoms persist or worsen despite initial treatment, or if you notice signs of infection (e.g., redness, warmth, fever).

Tips for Medical Coders

Document the encounter as a subsequent visit for a fracture with nonunion. Include details about the fracture's displacement, the pisiform bone involvement, and the lack of healing. Ensure documentation supports the nonunion diagnosis and subsequent care context.